﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace BLL
{
    public class NumberBUO
    {
        public bool isNumberInput(string s)
        {
            bool b = true;
            for (int i = 0; i < s.Length; i++)
            {
                if (!char.IsNumber(s[i]))
                {
                    b = false;
                    break;
                }
            }
            return b;
        }
    }
}
